In this study, the facts like agriculture, livetock, mining, commerce, commerce routes and commercial/industrial centers are focus on, which forms the economical life of Herât in the period of Soltan Sahahrukh (1405-1447) who reigned in the first half of XV. century. The activities, completed in that period, were the key point for development of that region. In Timurid period, after the devastating influx of Mongols, new ditches and dams had been built in order to recover the death or fallowed land and to enlarge the agricultural area in Horasan, and thus agricultural production was increased. Exporting also improved significantly through the progress of agriculture in this period. Timurids who believed that commerce was the best source of income, improved commercial relations with various countries thanks to policy of supporting of the traders. In this manner Herât took its place among the vital commercial centers in XV. century thanks to recovery of its economy.